Door inspection system for vehicle and inspection method for the same

ABSTRACT

An inspection system for a vehicle includes a vision inspection device including a plurality of vision camera and a plurality of laser device which move along exterior and sides of a door, which will be inspected, and inspect segmented sections respectively, a hanger device clamping the hemmed door on a hanger frame, and a jig device which clamps the hanger frame of the hanger device, and moves the door toward the vision inspection device for the vision inspection device to inspect the door fixed to the hanger device.

CROSS-REFERENCE TO RELATED APPLICATION

The present application claims priority of Korean Patent ApplicationNumber 10-2012-0130287 filed Nov. 16, 2012, the entire contents of whichapplication is incorporated herein for all purposes by this reference.

BACKGROUND OF INVENTION

Field of Invention

The present invention relates to an inspection system for a vehicle andan inspection method for the same. More particularly, the presentinvention relates an inspection system for a vehicle and an inspectionmethod for the same which may inspect exterior quality of a doorsupplied to a corresponding process line with relatively short time andprevent the door with bad quality from being supplied to the processline.

Description of Related Art

Generally, a vehicle is manufactured by numerous assembling processesusing about twenty to thirty thousands of parts.

In particular, a vehicle body is formed by a first assembling processsuch that vehicle body panels are produced in a press process, and eachpart of the vehicle body is then assembled in a vehicle body factory toform a vehicle body of a body-in-white (BIW) state.

The formed vehicle body undergoes a main body process for mounting sidewalls, a loop, a rear panel, etc. on the floor thereof, and then ispainted in painting process. After that, an engine, a transmission, aninterior, and an exterior are assembled in an outfitting process.

Each panel to be mounted on the vehicle body is fabricated by a pressworking, is mounted and fixed on a panel jig apparatus in a vehicle bodyassembly process and undergoes operations including assembling, welding,sealing, and hemming, and is then painted in a painting process.

Undergoing the manufacturing processes, for example, spacing, precisionof size, curved shape and so on of a door are important factors ofexterior quality of a vehicle.

In the related art, since complete inspections of doors supplied tovehicle body assemble lines require a lot of human resources andprocesses, and thus sampling inspection is generally implemented.

In the related art, since the door inspection is implemented aftermanufacturing of the door manually and thus complete inspections ofdoors is not possible practically.

Also, it is not possible to prevent the door with bad exterior qualityfrom supplying into after process, and thus field claim is increased andcorporate image is deteriorated.

Thus, solve the problem of bad exterior quality of the vehicle, the doormust be inspected before further manufacturing processes, statisticalmanagement of exterior quality is required, and automatic inspection ofthe door on process line is required.

The information disclosed in this Background section is only forenhancement of understanding of the general background of the inventionand should not be taken as an acknowledgement or any form of suggestionthat this information forms the prior art already known to a personskilled in the art.

BRIEF SUMMARY

Various aspects of the present invention provide for an inspectionsystem for a vehicle and an inspection method for the same which mayinspect exterior quality of a door supplied to a corresponding processline with relatively short time and prevent the door with bad qualityfrom being supplied to the process line, so that statistical managementof exterior quality is possible and automatic inspection of the door onprocess line is possible.

An inspection system for a vehicle according to various aspects of thepresent invention may include a vision inspection device including aplurality of vision camera and a plurality of laser device which movealong exterior and sides of a door, which will be inspected, and inspectsegmented sections respectively, a hanger device clamping the hemmeddoor on a hanger frame, and a jig device which clamps the hanger frameof the hanger device, and moves the door toward the vision inspectiondevice for the vision inspection device to inspect the door fixed to thehanger device.

The vision inspection device may include a first base frame, firstmoving units which are disposed both sides of the first base frame, andmove a first sliding plate to left and right direction of the first baseframe, a second moving unit which is disposed between the first movingunits through at least one supporting beam on the first base frame, andmoves a second sliding plate to left and right direction of the firstbase frame, a visual inspection unit, which is movable along left andright side of the first base frame on the second sliding plate of thesecond moving unit and inspects the exterior of the door, and sideinspection units, which are movable along left and right direction ofthe first base frame on each first sliding plate of the first movingunit and movable along up and down direction by a vertical moving unitfor inspecting both sides of the door.

The first moving unit may include a first rail housing which is disposedon the first base frame, and on which a first sliding plate is slidablyconnected, a first drive motor which is mounted within the first railhousing, and of which a rotation shaft is connected to a first ballscrew, a first guide rail mounted on the first base frame through afirst plate within the first rail housing, and a first rail block intowhich the first ball screw is inserted, and which is disposed on thefirst guide rail movable along the first ball screw by operation of thefirst drive motor, and the first rail block is connected to the firstsliding plate.

The second moving unit may include a second rail housing which isdisposed between the first moving units on the first base frame thoughat least one supporting beam, and on which a second sliding plate isslidably connected, a second drive motor which is mounted within thesecond rail housing, and of which a rotation shaft is connected to asecond ball screw, a second guide rail mounted on the supporting beamthrough a second plate within the second rail housing, and a second railblock into which the second ball screw is inserted, and which isdisposed on the second guide rail movable along the second ball screw byoperation of the second drive motor, and the second rail block isconnected to the second sliding plate.

The vertical moving unit may include a supporting post mounted on thefirst sliding plate, a third rail housing which is mounted to a side ofthe supporting post toward the first base frame, and on which a thirdsliding plate is slidably connected, a third drive motor which ismounted within the third rail housing, and of which a rotation shaft isconnected to a third ball screw, a third guide rail mounted on thesupporting post through a third plate within the third rail housing, anda third rail block into which the third ball screw is inserted, andwhich is disposed on the third guide rail movable along the third ballscrew by operation of the third drive motor, and the third rail block isconnected to the third sliding plate.

The side inspection unit may include a bracket mounted to the thirdsliding plate, and a camera housing which is mounted to the bracket, ofwhich a side toward the side of the door is opened, and of which thevision camera and the laser device are disposed therein.

The vision camera may be mounted inclined at a predetermined angle withrespect to the laser device irradiation direction.

The visual inspection unit may include a mounting frame mounted to anupper portion of the second sliding plate, and a housing which ismounted to the mounting frame, of which a plurality of mounting spaceare formed therein, and the vision camera and the laser device aredisposed to mounting space respectively.

A side of the housing toward the exterior of the door may be opened andthe housing is mounted inclined with respect to the mounting frame at apredetermined angle.

The each vision camera may be inclined at a predetermined angle withrespect to the laser device irradiation direction.

The each vision camera and the laser device may be misaligned alonglength direction of the housing.

The hanger device may include at least one door clamper formed to afront side of the hanger frame for clamping the door, protrude portionsformed an upper and lower portion of the hanger frame, and an armmounting portion formed to a side of the hanger frame for an arm of arobot to be connected thereto.

The jig device may include a second base frame disposed on a floor,rails mounted both sides of an upper portion of the second base frame, amoving plate which is movable left and right direction of the secondbase frame along the rails though the fourth rail block, an operatingcylinder which is mounted on the second base frame, and is connected toa lower portion of the moving plate for moving the moving plate, asupporting frame mounted on the moving plate, and a clamping unit whichis mounted to the supporting frame corresponding to each protrudeportion of the hanger frame and clamps the protrude portion.

The clamping unit may include a locator which is mounted to thesupporting frame for supporting a rear portion of the protrude portionof the hanger frame, a clamping unit cylinder which includes anoperating rod and is hingedly connected to a rear portion of thelocator, a clamper of which a side is hingedly connected to a frontportion of the locator, and the clamper is hingedly connected to theoperating rod of the clamping unit cylinder, and a pusher which ismounted to the clamper and pushes the front side of the protrude portionsupported by the locator.

An inspection method of a door for a vehicle, which inspects exteriorand sides of a hemmed door according to various aspects of the presentinvention, the inspection method may include (a) moving the door using ahanger device to be mounted on a jig device, setting a vision inspectiondevice according to a door type, and determining whether inspectionsetting for the door is completed, (b) moving the door to the visioninspection device according to the setting state, scanning and measuringthe exterior of the door, and determining whether quality of the door isnormal, and (c) sorting the door according to the quality of the door,and moving the door.

The step (a) may include picking up the hemmed door and moving the doorusing the hanger device, clamping the hanger device to the jig deviceand outputting signals of the door type, setting the vision inspectiondevice according to the door type signals, determining whether theinspection setting is completed, and if it is determined that theinspection setting is not completed, outputting abnormal signals,stopping inspection process, and returning for outputting signals of thedoor type.

The step (b) may include if the inspection setting for the door iscompleted, moving the door toward the vision inspection device using thejig device, scanning and measuring the exterior and sides of the doorusing the vision inspection device, and determining whether the size andexterior quality of the door scanned and measured using the visioninspection device is normal.

The step (c) may include if the size and exterior quality of the doorscanned and measured using the vision inspection device is not normal,determining the door is bad and displaying the result, separating thehanger device where the door is clamped from the jig device and movingthe door to a place for poor doors, if the size and exterior quality ofthe door scanned and measured using the vision inspection device isnormal, determining the door is good and displaying the result, andseparating the hanger device where the door is clamped from the jigdevice and moving the door to a place for good doors;

The methods and apparatuses of the present invention have other featuresand advantages which will be apparent from or are set forth in moredetail in the accompanying drawings, which are incorporated herein, andthe following Detailed Description, which together serve to explaincertain principles of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of an exemplary inspection system for avehicle according to the present invention.

FIG. 2 is a perspective view of a vision inspection device applied to anexemplary inspection system for a vehicle according to the presentinvention.

FIG. 3 is a rearward perspective view of a vision inspection deviceapplied to an exemplary inspection system for a vehicle according to thepresent invention.

FIG. 4 and FIG. 5 are drawings showing a moving unit and a verticalmoving unit applied to an exemplary vision inspection device accordingto the present invention.

FIG. 6 is a perspective view of a moving unit and a vertical moving unitapplied to an exemplary vision inspection device according to thepresent invention.

FIG. 7 is a cross-sectional view along line A-A of FIG. 6.

FIG. 8 is a drawing showing a visual inspection unit applied to anexemplary vision inspection device according to the present invention.

FIG. 9 is a drawing showing a side inspection unit applied to anexemplary vision inspection device according to the present invention.

FIG. 10 is a drawing showing a hanger device applied to an exemplaryinspection system for a vehicle according to the present invention.

FIG. 11 is a drawing showing a jig device applied to an exemplaryinspection system for a vehicle according to the present invention.

FIG. 12 is a drawing showing operations of a jig device applied to anexemplary inspection system for a vehicle according to the presentinvention.

FIG. 13 is a drawing showing operations of an exemplary inspectionsystem for a vehicle according to the present invention.

FIG. 14 is a flow chart of an exemplary inspection method for a vehicleaccording to the present invention.

DETAILED DESCRIPTION

Reference will now be made in detail to various embodiments of thepresent invention(s), examples of which are illustrated in theaccompanying drawings and described below. While the invention(s) willbe described in conjunction with exemplary embodiments, it will beunderstood that present description is not intended to limit theinvention(s) to those exemplary embodiments. On the contrary, theinvention(s) is/are intended to cover not only the exemplaryembodiments, but also various alternatives, modifications, equivalentsand other embodiments, which may be included within the spirit and scopeof the invention as defined by the appended claims.

FIG. 1 is a perspective view of an inspection system for a vehicleaccording to various embodiments of the present invention.

Referring to the drawing, an inspection system for a vehicle 1 accordingto various embodiments of the present invention may inspect exteriorquality of a door D supplied to a corresponding process line withrelatively short time and prevent the door with bad quality from beingsupplied to the process line using a vision inspection device 100, ahanger device 200 and a jig device 300, so that statistical managementof exterior quality is possible and automatic inspection of the door onprocess line is possible.

The inspection system for a vehicle 1 according to various embodimentsof the present invention includes the vision inspection device 100, thehanger device 200 and the jig device 300, and detailed elements will bedescribed hereinafter.

FIG. 2 is a perspective view of a vision inspection device applied to aninspection system for a vehicle according to various embodiments of thepresent invention, and FIG. 3 is a rearward perspective view of a visioninspection device applied to an inspection system for a vehicleaccording to various embodiments of the present invention.

In various embodiments, the vision inspection device 100, as shown inFIG. 2 and FIG. 3, inspects exterior and both sides of the door D bymoving a plurality of vision camera C and a plurality of laser device Lto inspect segmented sections.

The vision inspection device 100 includes a first base frame 110, afirst moving unit 120, a second moving unit 130, a visual inspectionunit 140 and side inspection units 150.

The first base frame 110 is mounted on a floor, and the first and secondmoving unit 120 and 130 are mounted thereon.

In various embodiments, the first moving units 120 are disposed on bothsides of the first base frame 110 respectively and moves the firstsliding plate 121 to left and right direction of the first base frame110.

FIG. 4 and FIG. 5 are drawings showing a moving unit and a verticalmoving unit applied to a vision inspection device of various embodimentsof the present invention. FIG. 6 is a perspective view of a moving unitand a vertical moving unit applied to a vision inspection device ofvarious embodiments of the present invention, FIG. 7 is across-sectional view along line A-A of FIG. 6.

The first moving unit 120, referring to FIG. 1 to FIG. 7, includes afirst rail housing 123, a first drive motor 125, a first guide rail 127and a first rail block 129.

The first rail housings 123 are disposed along left and right directionof the first base frame 110, and the first sliding plate 121 is slidablyconnected thereon.

The first drive motor 125 is mounted within the first rail housing 123and a rotation shaft of which is connected to the first ball screw 126.

In various embodiments, the first guide rail 127 is disposed on thefirst base frame 110 through the first plate 128 within the first railhousing 123.

The first ball screw 126 is inserted into the first rail block 129, andthe first rail block 129 is movable along the first guide rail 127 bythe operation of the first drive motor 125 and is connected to the firstsliding plate 121.

The first rail block 129 of the first moving unit 120 moves along thefirst guide rail 127 by forward or rearward rotation of the first drivemotor 125, and simultaneously, the first sliding plate 121 connectedwith the first rail block 129 moves left or right direction of the baseframe 110.

In various embodiments, the second moving unit 130 is disposed betweenthe first moving units 120 through at least one supporting beam 111 onthe first base frame 110, and moves a second sliding plate 131 to leftand right direction of the first base frame 110.

In various embodiments of the present invention, since shape andconstituent elements of the second moving unit 130 is similar to thefirst moving unit 120, and thus the second moving unit 130 will bedescribed referring to FIG. 4 to FIG. 7.

Referring to the drawings, the second moving unit 130 includes a secondrail housing 133, a second drive motor 135, a second guide rail 137 anda second rail block 139.

The second rail housing 133 between the first moving units 120 ismounted to the first base frame 110 though a plurality of supportingbeam 111 and the second sliding plate 131 is slidably connected thereto.

The second drive motor 135 is mounted within the second rail housing 133and a rotation shaft of which is connected to the second ball screw 136.

In various embodiments, the second guide rail 137 is disposed on thesupporting beam 111 through the second plate 138 within the second railhousing 133.

The second ball screw 136 is inserted into the second rail block 139,and the second rail block 139 is movable along the second guide rail 137on the second ball screw 136 by the operation of the second drive motor135 and is connected with the second sliding plate 131.

The second rail block 139 of the second moving unit 130 moves along thesecond guide rail 137 by forward or rearward rotation of the seconddrive motor 135, and simultaneously, the second sliding plate 131connected the second rail block 139 moves left or right direction of thebase frame 110.

FIG. 8 is a drawing showing a visual inspection unit applied to a visioninspection device of various embodiments of the present invention.

Referring to the drawing, the visual inspection unit 140 is movable leftor right direction of the first base frame 110 through the secondsliding plate 131 of the second moving unit 130 and inspects or measuresthe exterior of the door D.

The visual inspection unit 140, referring to FIG. 2, FIG. 3 and FIG. 8,includes a mounting frame 141 and a housing 145.

The mounting frame 141 is mounted an upper portion of the second slidingplate 131.

The housing 145 is mounted to the mounting frame 141, and a plurality ofmounting space 143 is formed therein along length direction thereof, andthe vision camera C and the laser device L is mounted to the eachmounting space 143 at a predetermined position.

A side of the housing 145, referring to FIG. 8, corresponding to theexterior of the door D is open, and the housing 145 is mounted at anincline with respect to the mounting frame 141 at a predetermined angle.

The vision camera C is mounted at an incline within the mounting space143 with a predetermined angle with respect to the laser device Lirradiation direction.

That is, the vision camera C is mounted at an incline with apredetermined angle θ with respect to the laser device L irradiationdirection.

In this case, the predetermined θ is about 20°, for optimizingresolution and inspection speed of the vision camera C.

When the laser device L forms cross-sectional profile along verticaldirection of the door D, the vision camera C takes 2D photographs of thelaser, forms 3D image and then takes the cross-sectional profile tosurfacization.

The vision camera C changes light intensity to voltage using ChargeCoupled Device (CCD) sensor provided to a lens, expresses voltage asgray scale, and then transmits corresponding signal to a non-illustratedcontroller.

The visual inspection unit 140 moves along left and right direction ofthe door D by the operation of the second moving unit 130, and inspectsor measures the door D using the vision camera C and the laser device L.

The each vision camera C and the laser device L is misaligned (notparallel) along length direction of the housing 145 within each mountingspace 143.

Since the each vision camera C and the laser device L is misaligned (notparallel), the exterior of the door D may be divided and inspectedrespectively. So the inspection of the exterior quality of the door Dmay be implemented quickly.

The side inspection units 150 are movable along left and right directionof the first base frame 110 on each first sliding plate 121 of the firstmoving unit 120 and movable along up and down direction by a verticalmoving unit 160 for inspecting both sides of the door D.

In various embodiments of the present invention, since shape andconstituent elements of the vertical moving unit 160 is similar to thefirst moving unit 120, and thus the vertical moving unit 160 will bedescribed referring to FIG. 4 to FIG. 7.

Referring to the drawings, the vertical moving unit 160 includes asupporting post 162, a third rail housing 163, a third drive motor 165,a third guide rail 167 and a third rail block 169.

The supporting post 162 is mounted to an upper portion of the firstsliding plate 121.

The third rail housing 163 is mounted to a side of the supporting post162 toward the first base frame 110, and a third sliding plate 161 isslidably connected thereon.

The third drive motor 165 is mounted within the third rail housing 163and a rotation shaft of which is connected to the third ball screw 166.

The third guide rail 167 is disposed on the supporting post 162 throughthe third plate 168 within the third rail housing 163.

The third ball screw 166 is inserted into the third rail block 169, andthe third rail block 169 is movable along the third guide rail 167 onthe third ball screw 166 by the operation of the third drive motor 165and is connected with the third sliding plate 161.

The third rail block 169 of the vertical moving unit 160 moves along thethird guide rail 167 by forward or rearward rotation of the third drivemotor 165, and simultaneously, the third sliding plate 161 connectedwith the third rail block 169 moves up and down direction of the baseframe 110.

FIG. 9 is a drawing showing a side inspection unit applied to a visioninspection device of various embodiments of the present invention.

Meanwhile, in various embodiments of the present invention, the sideinspection unit 150, as shown in FIG. 9, includes a bracket 151 mountedto the third sliding plate 161 and a camera housing 153 which is mountedto the bracket 151, of which a side toward the side of the door D isopened, and of which the vision camera C and the laser device L aredisposed therein.

As same as the visual inspection unit 140, the vision camera C ismounted at an incline at a predetermined angle with respect to the laserdevice L irradiation direction.

In this case, the predetermined θ is about 20°, for optimizingresolution and inspection speed of the vision camera C.

When the laser device L forms cross-sectional profile along verticaldirection of the door D, the vision camera C takes 2D photographs of thelaser, forms 3D image and then takes the cross-sectional profile tosurfacization.

The operation of the side inspection unit 150 is similar to the abovedescribed visual inspection unit 140, and thus detailed description willbe omitted.

FIG. 10 is a drawing showing a hanger device applied to an inspectionsystem for a vehicle according to various embodiments of the presentinvention.

In the drawings, the hanger device 200 clamps the hemmed door Dinspection object of the vision inspection device 100 using the hangerframe 210 and is movable by a robot.

The hanger device 200 includes at least one door clamper 211 mounted toa front side of the hanger frame 210 for clamping the door D, protrudeportions 213 formed an upper and lower portion of the hanger frame 210,and an arm mounting portion 215 formed to a side of the hanger frame 210for an arm of a robot to be connected thereto.

FIG. 11 is a drawing showing a jig device applied to an inspectionsystem for a vehicle according to various embodiments of the presentinvention, and FIG. 12 is a drawing showing operations of a jig deviceapplied to an inspection system for a vehicle according to variousembodiments of the present invention.

Referring to the drawings, the jig device 300 clamps the hanger frame210 of the hanger device 200, and moves the door D toward the visioninspection device 100 for the vision inspection device 100 to inspectthe door D fixed to the hanger device 200.

The jig device 300 includes a second base frame 310, a rail 311, amoving plate 320, an operating cylinder 330, a supporting frame 340 anda clamping unit 350.

The second base frame 310 is disposed on a floor rearward of the firstbase frame 110.

The rails 311 are disposed on both side of an upper portion of thesecond base frame 310 along length direction.

The moving plate 320 is movable left and right direction of the secondbase frame 310 along the rails 311 though the fourth rail block 313.

The operating cylinder 330 including a non-illustrated operating rod ismounted on the second base frame 310, and is connected to a lowerportion of the moving plate 320 for moving the moving plate 320 bysupplying or releasing of operation fluid.

The supporting frame 340 is mounted to an upper portion of the movingplate 320 and is movable by the moving plate 320 when the operatingcylinder 330 is operated to forward or rearward.

The clamping unit 350 is mounted to the supporting frame 340corresponding to each protrude portion 213 of the hanger frame 210 andclamps the protrude portion 213.

The clamping unit 350 includes a locator 351, a clamping unit cylinder353, a clamper 355 and a pusher 357.

The locator 351 is mounted to the supporting frame 340 for supporting arear portion of the protrude portion 213 of the hanger frame 210.

The clamping unit cylinder 353 includes an operating rod 352 and ishingedly connected to a rear portion of the locator 351.

A side of the clamper 355 is hingedly connected to a front portion ofthe locator 351, and the clamper 355 is hingedly connected to theoperating rod 352 of the clamping unit cylinder 353.

The pusher 357 is mounted to the clamper 355 and pushes the front sideof the protrude portion 213 supported by the locator 351.

The moving plate 320 of the jig device 300, as shown in FIG. 12,positions rearward of the second base frame 310 by the forward operationof the operating cylinder 330 before the hanger device 200 clamping thedoor D is clamped thereto.

The hanger unit 200 clamping the door D is moved by a robot to the jigdevice 300, and then as shown in FIG. 11, the operating cylinder 330 isoperated rearward to move the moving plate 320 to forward of the secondbase frame 310 after clamping the hanger frame 210 by the clamping unit350.

Thus, the door D is moved to the vision inspection device 100 positionedforward of the second base frame 310.

Hereinafter, operations of the inspection system for a vehicle accordingto various embodiments of the present invention will be described.

FIG. 13 is a drawing showing operations of an inspection system for avehicle according to various embodiments of the present invention, andFIG. 14 is a flow chart of an inspection method for a vehicle accordingto various embodiments of the present invention.

An inspection method of a door for a vehicle, which inspects exteriorand sides of a hemmed door according to various embodiments of thepresent invention includes (a) moving the door D using the hanger device200 to be mounted on the jig device 300, setting the vision inspectiondevice 100 according to the door type (door model), and determiningwhether inspection setting for the door D is completed, (b) moving thedoor D to the vision inspection device 100 according to the settingstate, scanning and measuring the exterior of the door D, anddetermining whether quality of the door D is normal, and (c) sorting thedoor D according to the quality of the door D, moving the door D, andclosing the processes.

The hanger device 200 clamps the hemmed door D, is moved by the robot,and set on the jig device 300 (S100).

As shown in FIG. 12 and S10 of FIG. 13, the moving plate 320 is movedrearward of the second base frame 310 by the operation of the operatingcylinder 330 and also the supporting frame 340 is moved rearward of thesecond base frame 310.

After movement of the hanger device 200 clamping the door D to the jigdevice 300, the jig device 300, as shown in S20 of FIG. 13, clamps thehanger frame 210 of the hanger device 200 by the operation of theclamping unit 350, and then transmits type or model signal of the door Dto a non-illustrated controller (S110).

The controller sets the vision inspection device 100 according to theoutput signal at the step S110 (S120), and then determines the settingfor inspection of the door D (S130).

If it is determined that the inspection setting for the door D is notcompleted at the vision inspection device 100, outputting abnormalsignals, and stopping inspection process (S140), and then returning tothe step (S110) for outputting signals of the door type.

If the inspection setting for the door D is completed, the jig device200, as shown in S30 of FIG. 13, moves the door D toward the visioninspection device by moving the hanger frame 210 clamped to thesupporting frame 340 forward of the second base frame 310 according tothe operation of the operating cylinder 330 (S150).

Then the controller, as shown in S40 of FIG. 13, controls the operationsof the first and second moving unit 120 and 130 and the vertical movingunit 160 so that the visual inspection unit 140 and the side inspectionunit 150 scans and measuring the exterior and sides of the door D(S160).

In this case, the laser device L of the visual inspection unit 140 andthe side inspection unit 150 forms cross-sectional profile alongvertical direction of the door D, the vision camera C takes 2Dphotographs of the laser, forms 3D image and then takes thecross-sectional profile to surfacization.

Then the controller analyses the image signal scanned and measured bythe each vision camera C of the vision inspection device 100, outputsthe inspection result and compares with a predetermined value fordetermining the size and exterior quality of the door D is normal(S170).

If the size and exterior quality of the door D scanned and measuredusing the vision inspection device 100 is not normal, the controllerdetermines the door D is bad and displaying the result (S180).

Then the controller outputs management sheets of the poor door D,separates the hanger device 200 where the door D is clamped from the jigdevice 300 and moves the door D to a place for poor doors (S190), andthen the process is completed. After that the process is repeated theinspection for the hemmed door D.

On the other hand, if the size and exterior quality of the door Dscanned and measured using the vision inspection device 100 is normal,the controller determines the door D is good and displaying the result(S200).

Then the controller outputs management sheets of the poor door D,separates the hanger device 200 where the door D is clamped from the jigdevice 300 and moves the door D to a place for good doors (S210), andthen the process is completed. After that the process is repeated theinspection for the hemmed door D.

As described above, the inspection system for a vehicle according tovarious embodiments of the present invention may inspect exteriorquality of a door D supplied to a corresponding process line withrelatively short time and prevent the door D with bad quality from beingsupplied to the process line using the vision inspection device 100, thehanger device 200 and the jig device 300, so that statistical managementof exterior quality is possible and automatic inspection of the door onprocess line is possible.

That is, after inspection of the door D, the door D is supplied to thepost process, and thus statistical management of exterior quality of thedoor D may be possible.

Since the vision inspection device 100 inspects segmented sections ofthe door D without integration or combination of the segmented sections,and thus fast inspection may be possible and man power for inspectionmay be reduced.

Also, it is possible to prevent the door with bad exterior quality fromsupplying into post process, and thus field claim may be reduced andcorporate image is enhanced.

For convenience in explanation and accurate definition in the appendedclaims, the terms upper or lower, front or rear, and etc. are used todescribe features of the exemplary embodiments with reference to thepositions of such features as displayed in the figures.

The foregoing descriptions of specific exemplary embodiments of thepresent invention have been presented for purposes of illustration anddescription. They are not intended to be exhaustive or to limit theinvention to the precise forms disclosed, and obviously manymodifications and variations are possible in light of the aboveteachings. The exemplary embodiments were chosen and described in orderto explain certain principles of the invention and their practicalapplication, to thereby enable others skilled in the art to make andutilize various exemplary embodiments of the present invention, as wellas various alternatives and modifications thereof. It is intended thatthe scope of the invention be defined by the Claims appended hereto andtheir equivalents.

What is claimed is:
 1. An inspection system for a vehicle comprising: avision inspection device including a plurality of vision cameras and aplurality of laser devices that move along an exterior and sides of ahemmed door for inspection of the door along segmented sections,respectively; a hanger device clamping the hemmed door on a hangerframe; and a jig device for clamping the hanger frame of the hangerdevice, and moving the door toward the vision inspection device for thevision inspection device to inspect the door fixed to the hanger device,wherein the vision inspection device comprises: a first base frame;first moving units disposed on opposing sides of the first base frame,and move a first sliding plate to left and right direction of the firstbase frame; a second moving unit disposed between the first moving unitsthrough at least one supporting beam on the first base frame, whereinthe second moving unit moves a second sliding plate to left and rightdirection of the first base frame; a visual inspection unit, movablealong left and right side of the first base frame on the second slidingplate of the second moving unit and inspects the exterior of the door;and side inspection units movable along left and right directions of thefirst base frame on each first sliding plate of the first moving unitand movable along up and down direction by a vertical moving unit forinspecting both sides of the door.
 2. The inspection system of claim 1,wherein the first moving unit comprises: a first rail housing disposedon the first base frame, and on which a first sliding plate is slidablyconnected; a first drive motor mounted within the first rail housing,and of which a rotation shaft is connected to a first ball screw; afirst guide rail mounted on the first base frame through a first platewithin the first rail housing; and a first rail block, into which thefirst ball screw is inserted, disposed on the first guide rail movablealong the first ball screw by operation of the first drive motor, andthe first rail block is connected to the first sliding plate.
 3. Theinspection system of claim 1, wherein the second moving unit comprises:a second rail housing disposed between the first moving units on thefirst base frame though at least one supporting beam, and on which asecond sliding plate is slidably connected; a second drive motor mountedwithin the second rail housing, and of which a rotation shaft isconnected to a second ball screw; a second guide rail mounted on thesupporting beam through a second plate within the second rail housing;and a second rail block, into which the second ball screw is inserted,disposed on the second guide rail movable along the second ball screw byoperation of the second drive motor, and the second rail block isconnected to the second sliding plate.
 4. The inspection system of claim1, wherein the vertical moving unit comprises: a supporting post mountedon the first sliding plate; a third rail housing mounted to a side ofthe supporting post toward the first base frame, and on which a thirdsliding plate is slidably connected; a third drive motor mounted withinthe third rail housing, and of which a rotation shaft is connected to athird ball screw; a third guide rail mounted on the supporting postthrough a third plate within the third rail housing; and a third railblock, into which the third ball screw is inserted, disposed on thethird guide rail movable along the third ball screw by operation of thethird drive motor, and the third rail block is connected to the thirdsliding plate.
 5. The inspection system of claim 4, wherein the sideinspection unit comprises: a bracket mounted to the third sliding plate;and a camera housing mounted to the bracket, of which a side toward theside of the door is opened, and of which the vision camera and the laserdevice are disposed therein.
 6. The inspection system of claim 5,wherein the vision camera is mounted at an incline with a predeterminedangle with respect to the laser device irradiation direction.
 7. Theinspection system of claim 1, wherein the visual inspection unitcomprises: a mounting frame mounted to an upper portion of the secondsliding plate; and a housing mounted to the mounting frame, of which aplurality of mounting space are formed therein, and the vision cameraand the laser device are disposed to mounting space respectively.
 8. Theinspection system of claim 7, wherein a side of the housing toward theexterior of the door is opened and the housing is mounted to themounting frame at an incline with a predetermined angle.
 9. Theinspection system of claim 7, wherein the each vision camera is mountedat an incline with a predetermined angle with respect to the laserdevice irradiation direction.
 10. The inspection system of claim 7,wherein the each vision camera and the laser device is misaligned alonglength direction of the housing.
 11. The inspection system of claim 1,wherein the hanger device comprises: at least one door clamper formed toa front side of the hanger frame for clamping the door; protrudeportions formed an upper and lower portion of the hanger frame; and anarm mounting portion formed to a side of the hanger frame for an arm ofa robot to be connected thereto.
 12. The inspection system of claim 11,wherein the jig device comprises: a second base frame disposed on afloor; rails mounted both sides of an upper portion of the second baseframe; a moving plate movable left and right direction of the secondbase frame along the rails though the fourth rail block; an operatingcylinder mounted on the second base frame, and is connected to a lowerportion of the moving plate for moving the moving plate; a supportingframe mounted on the moving plate; and a clamping unit mounted to thesupporting frame corresponding to each protrude portion of the hangerframe and clamps the protrude portion.
 13. The inspection system ofclaim 12, wherein the clamping unit comprises: a locator mounted to thesupporting frame for supporting a rear portion of the protrude portionof the hanger frame; a clamping unit cylinder including an operating rodand is hingedly connected to a rear portion of the locator; a clamperincluding a side hingedly connected to a front portion of the locator,and the clamper is hingedly connected to the operating rod of theclamping unit cylinder; and a pusher mounted to the clamper and pushesthe front side of the protrude portion supported by the locator.